This is fascinating stuff and I'm so glad you shared this.
I did some more reading into this and it honestly sounds similar to the way the CIA backed the coupe in Chile.
The more you think about it the more it makes sense, resources is only one part of this equation but its a huge one. Lithium is critical for electric vehicle batteries, as the US slowly transitions to EVs, securing lithium supplies becomes strategically vital. A US aligned Bolivian government would preferentially sell to US companies at favorable rates rather than China, which is already aggressively buying lithium contracts.